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Question 743 of 1,750

SDLC Automation →mediumMultiple ChoiceObjective-mapped

DOP-C02 SDLC Automation Practice Question

This DOP-C02 practice question tests your understanding of sdlc automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A company uses AWS CodeCommit as a Git repository and CodeBuild for continuous integration. The buildspec.yml file includes steps to run unit tests and package the application. The team wants to ensure that only code from the main branch is deployed to production. They have set up a CodePipeline that triggers on changes to any branch. The pipeline includes a build stage that runs CodeBuild, and then a deploy stage that deploys to production. The team noticed that code from feature branches is being deployed to production accidentally. The team wants to modify the pipeline to prevent this. What is the MOST effective solution?

A
Use IAM policies to restrict developers from pushing to the main branch.
Why wrong: This prevents pushes to main but does not prevent the pipeline from triggering on feature branches that are pushed.
B
In the CodePipeline source stage, configure the branch filter to only allow the main branch to trigger the pipeline.
Branch filtering at the source stage prevents the pipeline from starting for non-main branches.
C
Add a manual approval step before the deploy stage and require approval from a senior engineer.
Why wrong: This adds a gate but still triggers the pipeline for feature branches, wasting build resources.
D
Modify the CodeBuild project to only build the main branch by specifying the branch in the source configuration.
Why wrong: CodeBuild itself does not control pipeline triggers; the pipeline source stage does.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

In the CodePipeline source stage, configure the branch filter to only allow the main branch to trigger the pipeline.

Option B is the most effective solution because it configures the source stage to only trigger the pipeline when changes are pushed to the main branch. This directly prevents feature branch changes from starting the pipeline. Option A is not effective because IAM policies can restrict push access but do not control pipeline triggers. Option C is not effective because a manual approval step does not prevent the pipeline from being triggered; it only adds a gate before deployment, and the build stage still runs, wasting resources. Option D is not effective because configuring the branch in the CodeBuild project's source configuration only affects what CodeBuild builds, but the pipeline is still triggered for all branches, so the pipeline will run but CodeBuild may skip non-main branches; however, the pipeline still triggers and may cause unnecessary runs or alerts.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Use IAM policies to restrict developers from pushing to the main branch.
Why it's wrong here
This prevents pushes to main but does not prevent the pipeline from triggering on feature branches that are pushed.
✓
In the CodePipeline source stage, configure the branch filter to only allow the main branch to trigger the pipeline.
Why this is correct
Branch filtering at the source stage prevents the pipeline from starting for non-main branches.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add a manual approval step before the deploy stage and require approval from a senior engineer.
Why it's wrong here
This adds a gate but still triggers the pipeline for feature branches, wasting build resources.
✗
Modify the CodeBuild project to only build the main branch by specifying the branch in the source configuration.
Why it's wrong here
CodeBuild itself does not control pipeline triggers; the pipeline source stage does.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this DOP-C02 question test?

SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: In the CodePipeline source stage, configure the branch filter to only allow the main branch to trigger the pipeline. — Option B is the most effective solution because it configures the source stage to only trigger the pipeline when changes are pushed to the main branch. This directly prevents feature branch changes from starting the pipeline. Option A is not effective because IAM policies can restrict push access but do not control pipeline triggers. Option C is not effective because a manual approval step does not prevent the pipeline from being triggered; it only adds a gate before deployment, and the build stage still runs, wasting resources. Option D is not effective because configuring the branch in the CodeBuild project's source configuration only affects what CodeBuild builds, but the pipeline is still triggered for all branches, so the pipeline will run but CodeBuild may skip non-main branches; however, the pipeline still triggers and may cause unnecessary runs or alerts.

What should I do if I get this DOP-C02 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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